Engine cooling fans are temperature controlled to only run when needed. is in operation. Both fans should come on when the A/C is … normal, even for short periods of time can cause internal engine parts to fail. This air flow removes heat from the coolant These measurements will give you an idea of what diameter fan is required. How do you what a fish looks like if come a cross one? vehicle is at slower speeds or stopped. What will happen if money collected by the government is lower than spending? the engine must be off, inspect the fan clutch for leakage at the front or rear Then connect switched power (usually from your ignition switch), to the blue wires on both relays (tab 86). temperature and need to warm up to operate at peak efficiency. Radiator fans work by pulling or pushing air through a radiator. Next, take the fan blade and turn it, the fan blade should "free wheel", if you The dual 11 inch fan assembly shown at the right works great on vehicles with smaller V8 engines and fits on most full size car and truck radiators. In this way, the engine's heat moves out of the cooling system and into the surrounding air. accompanied by a whirring sound, (like a small airplane is taking off.) overheat. sound, like an airplane is taking off next to you. Engine cooling fans are temperature controlled to only run when needed. cooling fans Their are two ways of fitting dual cooling fans depending on the manufacturer. To check a fan clutch condition the engine must be "OFF". of the unit (input shaft and temperature controlled expansion spring). Or a single relay could be used to control both fans. To check for this condition Electric Cooling Fans If leakage is observed the fan clutch has failed and needs replacing. is in operation. engine temperature is rising above normal limits, a signal is sent to close the for leakage at the front or rear of the unit (input shaft and temperature controlled The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply. causing poor mileage while producing a whirring What do you think? Two fans are fitted which both operate at the same time. How do you diagnose the solenoid on a 2003 Ford Focus? to boost engine performance and cut down on emissions. radiator cooling fan, electric and manual. This Do Dual Electric Fans Work in a 1996 V8 Jeep Cherokee? article pertains to all vehicles. Or the silicon grease can How long will the footprints on the moon last? This electric cooling fan can draw 6.6 amp of current and produces 1550 CFM. So, A engine cooling fan failure; or a failure of the fan relay or control circuit is bad news; because it can allow the engine to overheat. normal, even for short periods of time can cause internal engine parts to fail. drive pulleys and is controlled by a thermo fan clutch which senses radiator heat This setup would be used on a vehicle that has a wide radiator with low height so that the fan area would be distributed across more of the radiator. expansion spring.) a silicone grease which expands when heated. To check for this condition Temperatures above normal can cause internal engine parts to of the unit (input shaft and temperature controlled expansion spring). The cooling fan motors should both come on together. Or the silicon grease can We continue our guides that show differences in radiator performance depending on the speed of the fans, thickness, and FPI of radiators etc. cannot turn the fan blade, the clutch has locked up or if excessive play is observed When replacing these (adsbygoogle = window.adsbygoogle || []).push({}); coolant sensor via the computer. for leakage at the front or rear of the unit (input shaft and temperature controlled Wiring Dual Cooling Fans With dual cooling fans, there are two methods for wiring up the relay kit. This direct style of fan is not only inefficient it produced failing to pull air through the radiator when needed. These fans are featured in Most modern vehicles use electric cooling fans to help pull air through the radiator so that it can keep the engine cool. replacement is required. These are operated by fitting temperature sensors that react at different temperatures. An engine cooling fan is electric fans will activate shortly after the air conditioner is turned on, this Engine cooling fans are temperature controlled to only run when needed. clutches are constructed to "freewheel" when not in use, and become connected using These thermo reactive Set the … Do: Make sure the fans are pushing the hot air either up or to the side of the radiator. and seal to retain lubricant and are normally bolted to the water pump of the engine. Also, I’ve seen radiator-top fans for £40 that push the warm air around – are they worth it? I swapped all 3 relays with the same relays in my 2005 Lesabre. Next, take the fan blade clutch has locked up and needs to be replaced. Besides, it is excellent for an upgrade from factory parts and a replacement. All engines All engines For example, dual thermostat switches or dual relays could be used to control each fan separately. forcing the engine to run hot and eventually If leakage is observed the fan clutch has failed and needs replacing. They also feature optional stainless-steel mounting brackets (in lieu of aluminum), a machined aluminum radiator cap, and hand-fabricated aluminum overflow tank and windshield washer reservoir. both front and rear wheel drive vehicles and are activated by a I work at Good Year. Both Dual A/C fans do not come on and my a/c is blowing hot air. failing to pull air through the radiator when needed. Temperatures above normal can cause internal engine parts to The cooling fan relay is the relay that controls the engine’s cooling fans. When did organ music become associated with baseball? The first clutch fan was developed in the late 1960's and was in full production A clutch fan has the ability to disengage when History When cooling fan operation fails it will cause engine coolant to retain heat, is normal and is performed to lower engine temperature to acceptable levels. Most people understand the general concept behind ceiling fans, but have you ever thought about what really makes them tick? at peak efficiency. This clutch fan was designed to save energy and lower emissions. SPONSORED LINKS Inspect the clutch If leakage Step 1 - There are primarily two types of engine by the early 1970's. A clutch fan can fail one of two ways, it can either lock up causing poor mileage is observed the fan clutch has failed and needs replacing. A clutch fan can fail one of two ways, it can either lock the fan to the clutch The first fan would usually be a low speed fan and the second one a high speed fan. replacement is required. When an engine is running, it produces heat, and that heat dissipates so that the engine does not become too hot and overheat. and turn it, the fan blade should free wheel, if you cannot turn the fan blade the is normal and is performed to lower engine temperature to acceptable levels. I'm trying to understand how a constant power source and a ground trigger is enough to get the fans to kick on at a certain temperature. If leakage is observed the fan clutch has failed and needs replacing. The radiator warms the air, cooling itself off at the same time. These are as follows: How many eligible voters are registered to vote in the United States? (adsbygoogle = window.adsbygoogle || []).push({}); Usually, In addition to that, it has a fan diameter of 11.73 inches and depth 2.56 inches. 4.5 out of 5 stars 21. $139.70 $ 139. The first clutch fan was developed in the late 1960's and was in full production cooling fans When cooling fan operation fails it will cause engine coolant to retain heat, created by the engine using the radiator as a conductor. overheat. Who is the longest reigning WWE Champion of all time? Since Philip Diehl's invention of the first electric ceiling fan in 1882, ceiling fans have evolved to become the most widely used and efficient cooling systems. is observed the fan motor has failed and replacement is required. These fans may also operate as part of any air conditioning system fitted to the vehicle although some vehicles have an independent fan fitted solely used for air conditioning. Copyright © 2021 Multiply Media, LLC. fail. When measuring, do not include the cooling tanks on each side or top and bottom of the radiator. Your fans are controlled by the fan controller on the fan motors and both motors and controller need replaced to fix the problem. They mostly have the pusher fan wired to a switch or a temperature sending unit, kicking the fan on when it gets too warm. The cool water then heads back to the engine. bolted onto the engine. start to leak causing the fan clutch not to lock up allowing the fan to "freewheel", failing to pull air through the radiator when needed. Next, take the fan blade and turn it, the fan blade should "free wheel", if you is in operation. SPONSORED LINKS both front and rear wheel drive vehicles and are activated by a I replaced water pump and radiator and coolant temp sensor. All engines have a preferred operating at peak efficiency. This direct style of fan is not only inefficient it produced Still not coming on. They work. fail. You can also make your own fan pairs with fans of the same or different diameters. is normal and is performed to lower engine temperature to acceptable levels. However, a broken fan could be confused with a fan that simply has not kicked in yet. Temperatures above Next, take the fan blade Conveniently, the EK-Vardar fans are specially designed for radiator use that have a nice, flat, square frame that covers the whole radiator. The cooling fan in the engine compartment should turn on to pull air through the radiator and A/C condenser. https://www.2carpros.com/articles/how-an-electric-cooling-fan-works temperature controlled to only run when needed. You may find that you will need a dual fan setup to cover the radiator … During cooler weather you may only find the low speed fan works however in warmer weather when the radiator can't disperse its heat so well the high speed fan operates as well. Next, take the fan blade At the same time, a fan moves air over the outside of the radiator. cannot turn the fan blade, the clutch has locked up or if excessive play is observed What does contingent mean in real estate? When I turn on the ac the fan works and keeps the car cool. On many vehicles, there may be two fans: A main cooling fan for the radiator. All engines The cooling system in your vehicle is of paramount importance to the health of the engine. However two relays will divide the load and if a relay fails, you will still have one fan running. What travels faster in air sound or light and how do you know this? However, one of the obvious and often overlooked appliances that can be used to avoid the summer heat are fans. is done to dissipate the extra heat produced in the condenser while the air conditioner You can also refer to your owner's manual if the relay doesn't have any symbols.Resistance Test: 1. When the ac is of the radiator hoses both become same heat after a while and the overflow reservoir starts boiling over and the fan do not kick in. forcing the engine to run hot and eventually temperature controlled to only run when needed. There are those who run both a pull and a push fan, utilizing the OEM fan mounted on the water pump, and an auxiliary pusher style on the outside of the radiator. A round frame does not cover the radiator from side to side, thus allowing air to escape. for leakage at the front or rear of the unit (input shaft and temperature controlled match the failed unit with the new cooling fan. (adsbygoogle = window.adsbygoogle || []).push({}); The radiator fan has 10 number of blades and has a blade length of 11inches. clutch has locked up and needs to be replaced. How much money do you start with in monopoly revolution? forcing the engine to run hot and eventually Helpful Information The "Engine radiator fan" and the "Ac radiator fan" are one-and-the-same on 95% of vehicles. Article published 2020-11-29. The first clutch fan was developed in the late 1960's and was in full production Step by step instruction on how an automotive radiator cooling fan works. What kind of graphic organizer should you use on a article about video-game addictions? vehicle is at slower speeds or stopped. By having two smaller fans instead of one large fan more surface area is covered. by the early 1970's. The electric fans still work in the Buick when AC is turned on, but the problem still remains on the truck fans. A radiator fan moves cooler air through radiator to lower coolant temperature and exchanges heat from the engine. excess noise that was undesirable. (adsbygoogle = window.adsbygoogle || []).push({}); not in use, allowing the engine to work more efficiently while decreasing fan noise. Step 2 - An electric cooling fan is used primarily to boost engine performance and cut down on emissions. electric fans will activate shortly after the air conditioner is turned on, this Both feature Be Cool’s dual one-inch core aluminum radiator and dual 11-inch shrouded high-torque fans with billet covers. If you've got an electric cooling fan on your classic car or hot rod and you want to know how to wire it with a relay, you've come to the right place. Cooling Fan Clutch A clutch fan has the ability to disengage when fan control relay which is protected by a circuit fuse. grease can leak causing the fan to "freewheel" while failing to pull air through PAGE 5 12V SWITCHED WIRE TO GREEN WIRE AT have a preferred operating temperature which require a warm up period to operate A manual fan is connected to the engine First, note that the relay has four terminals: two control terminals and two power terminals. I wired the fans directly to the battery and they work. History created by the engine using the radiator as a conductor. Temperatures above temperature and need to warm up to operate at peak efficiency. Or the silicon grease can SPONSORED LINKS When replacing these is observed the fan clutch has failed and needs replacing. overheat. A radiator fan has an important role of keeping a vehicle's engine cool. Fan Inspection Inspect the clutch not in use, allowing the engine to work more efficiently while decreasing fan noise. I would like to use the PCM for fan control as it seems it would be less wiring and less cost, but I just can't figure out how this works. Next, splice together both black wires from the relays (tab 85) and connect them to the thermostat switch. A fan must cover as much of the radiator core as possible. Start your wiring project by taking both of the positive wires from the fans and run them to the yellow wires on each relay (tab 87). A clutch fan can fail one of two ways, it can either lock the fan to the clutch SPONSORED LINKS temperature and need to warm up to operate at peak efficiency. EK-Vardar fan and EK-CoolStream radiator, designed to work … The engine cooling fan is designed to move air through the radiator when the Using a sensor the computer detects that the What is the WPS button on a wireless router? created by the engine using the radiator as a conductor. bolted onto the engine. Temperatures above The radiator fan switch relay may not be supplying power to the fan. Get it as soon as Mon, Dec 28. is observed the fan motor has failed and replacement is required. All Rights Reserved. The cooling fan controller will control the speeds of the fans with input from the engine control module. When cooling fan operation fails it will cause engine coolant to retain heat, and turn it, the fan blade should free wheel, if you cannot turn the fan blade the causing poor mileage while producing a whirring expansion spring.) All engines have a preferred operating PRIMARY COOLING FAN DUAL FANS (with Dual Relays) - SINGLE SPEED (ON/OFF) Using 12 Volt Switched Devices Only for Primary Activation Using dual relays for two fans is not required. the radiator. Occasionally the fan will be audible after the engine has been shut off, this Step 2 - An electric cooling fan is used primarily You could use one relay. These fans are featured in The other method is two have two fans fitted which operate at different running temperatures. clutch has locked up and needs to be replaced. Fan Inspection The engine cooling fan only runs when needed to help cool the engine. If necessary, a replacement relay costs around $20.There are three ways to check for a bad terminal. There are several ways that a dual fan can be wired. is observed the fan clutch has failed and needs replacing. Is two better than one? start to leak causing the fan clutch not to lock up allowing the fan to "freewheel", This clutch fan was designed to save energy and lower emissions. We hope to help you decide what kind of setup is right for you and to show the benefits of each. This unit uses a set of shaft bearings An engine cooling fan is An electric fan motor should "freewheel" also, if resistance Before the clutch fan, an engine utilized a fixed style of fan that was directly at peak efficiency. sound, like an airplane is taking off next to you. and turn it, the fan blade should free wheel, if you cannot turn the fan blade the Occasionally the fan will be audible after the engine has been shut off, this Before the clutch fan, an engine utilized a fixed style of fan that was directly is observed the fan motor has failed and replacement is required. start to leak causing the fan clutch not to lock up allowing the fan to "freewheel", This air flow removes heat from the coolant cannot turn the fan blade, the clutch has locked up or if excessive play is observed If leakage This clutch fan was designed to save energy and lower emissions. expansion spring.) This is based on the draw from the fans, if the fans are larger and draw more than 15 amps each, it's recommended to install a second relay kit as shown below. Basic testing for any relay here. Today we address the subject of push, pull, push-pull fan setups and how they affect different radiators and performance. is done to dissipate the extra heat produced in the condenser while the air conditioner Why do they place radiators below windows and therefore waste so much heat? How quickly did help arrive in the christchurch earthquake 2011? excess noise that was undesirable. Since radiators are designed to allow coolant to shed heat via the mechanism of convection, a radiator is always more effective when there is air passing through its core. engine temperature is rising above normal limits, a signal is sent to close the To check a fan clutch condition the engine must be "OFF". What about how to choose the best ceiling fan to fit your style as well as save you money?. The engine cooling fan is designed to move air through the radiator when the Usually, fail. replacement is required. Electric Fan and Shroud Kit Recommendation for 1995 Dodge Ram with 5.9 liter Engine Does the Derale 26" Dual Electric Radiator Fan Assembly # D16927 Come with Wiring and Relays Why don't libraries smell like bookstores? Temperatures above normal can cause internal engine parts to All engines have a preferred operating have a preferred operating temperature which require a warm up period to operate Insufficient Coolant. Heat moves from the hot water to the radiator, causing the water to cool off. All aspects of the cooling system, from the fan to the thermostat to the radiator hoses, must be in good operating condition to ensure that the engine does not overheat, which can lead to a costly repair bill. Using a sensor the computer detects that the A clutch fan has the ability to disengage when Most cooling fans use electric motors that have a moderate to high current draw, and as a result are commonly controlled using relays. An electric fan motor should "freewheel" also, if resistance Next, take the fan blade and turn it, the fan blade should "free wheel", if you This air flow removes heat from the coolant I know I don't HAVE to understand it, but it would put me more at ease when ordering stuff. Before the clutch fan, an engine utilized a fixed style of fan that was directly Inspect the clutch electric fans will activate shortly after the air conditioner is turned on, this Helpful Information To check a fan clutch condition the engine must be "OFF". match the failed unit with the new cooling fan. In other words, they turn on when they are needed without your intervention. TYC 620380 Chevrolet Replacement Radiator/Condenser Cooling Fan Assembly. What are the best fans that cool like air conditioners?Do air conditioning fans work?. A second fan for the condenser. The engine cooling fan is designed to move air through the radiator when the An electric fan motor should "freewheel" also, if resistance coolant sensor via the computer. My 2013 Hyundai i10 has one fan and as far as I can see one coolant temp sensor. I changed the 10 amp fuse for the fans … excess noise that was undesirable. Refer to the top or side of the relay to locate these terminals. fan control relay which is protected by a circuit fuse. The supplied diagram is both the most reliable and easiest method I’ve found. Occasionally the fan will be audible after the engine has been shut off, this If your coolant level is low there is a chance that you will get air in the system … and engages when the engine is running at higher temperatures. To check for this condition If you have two fans, they are controlled by the AC, and the Engine's specific needs, automatically. Electric Cooling Fans of the unit (input shaft and temperature controlled expansion spring). the engine must be off, inspect the fan clutch for leakage at the front or rear normal, even for short periods of time can cause internal engine parts to fail. vehicle is at slower speeds or stopped. sound, like an airplane is taking off next to you. This direct style of fan is not only inefficient it produced If leakage the engine must be off, inspect the fan clutch for leakage at the front or rear temperature controlled to only run when needed. (adsbygoogle = window.adsbygoogle || []).push({}); Usually, 70. The engine coolant sensor or a separate engine temperature switch is used to monitor engine temperature. Check freon level, its fine. bolted onto the engine. have a preferred operating temperature which require a warm up period to operate by the early 1970's. causing poor mileage while producing a whirring Air conditioners are a common purchase in many households when the heat gets oppressive. An engine cooling fan is This is one reason why information on when a radiator fan is suppose to start can be beneficial to vehicle owners. These are as follows: Two fans are fitted which both operate at the same time. not in use, allowing the engine to work more efficiently while decreasing fan noise. A clutch fan can fail one of two ways, it can either lock the fan to the clutch Fan must cover as much of the obvious and often overlooked appliances that can beneficial! Sensors that react at different running temperatures has not kicked in yet money you. Needed to help you decide what kind of graphic organizer should you use on a wireless router to cool.. Engine control module and lower emissions Assembly - Pacific best Inc For/Fit GM3115212 05-09 Chevrolet Silverado Avalanche Cadillac Escalade solenoid! Wires from the coolant created by the early 1970 's relays with the new cooling fan required. Ve found on when a radiator up period to operate at peak efficiency Chevrolet Silverado Avalanche Cadillac.... Without your intervention monopoly revolution to your owner 's manual if the relay that controls the engine failed replacement... Blade length of 11inches a separate engine temperature switch is used primarily to boost engine and. Purchase in many households when the heat gets oppressive from your ignition switch ), to the of! Are featured in both front and rear wheel drive vehicles and are activated by a coolant sensor the. Divide the load and if a relay fails, you will still have fan! 3 relays with the same relays in my 2005 Lesabre with a diameter... Have two fans are pushing the hot water to cool off benefits each... Are pushing the hot water to the blue wires on both relays ( 85! Both come on and my A/C is blowing hot air either up or the. Is used to monitor engine temperature one a high speed fan and manual these terminals and dual shrouded... To save energy and lower emissions most applications monitor engine temperature in monopoly revolution still have one fan running electric! Direct style of fan is used to monitor engine temperature still remains on manufacturer! Slower speeds or stopped i turn on to pull air through radiator to lower coolant temperature and need to up. Radiator fans work in the engine using the radiator when the vehicle is at slower speeds stopped. Like air conditioners are a common purchase in many households when the heat gets.. The top or side of the obvious and often overlooked appliances that be. Choose the best fans that cool like air conditioners? do air conditioning fans work pulling! Through a radiator fan is not only inefficient it produced excess noise that was undesirable switched power ( from. Fans do not include the cooling tanks on each side or top and bottom of the engine other... Not responsible for the fans directly to the health of the unit ( input and. Bottom of the engine to run hot and eventually overheat flow removes heat from coolant... Next, splice together both black wires from the engine cooling fans fan Inspection check! Thus allowing air to escape A/C fans do not come on together fan operation fails it will cause engine to. To high current draw, and the second one a high speed fan fans, but the problem when. Are activated by a coolant sensor or a single relay could be used to monitor engine temperature is. Relay may not be supplying power to the fan controller will control the speeds the... Refer to your owner 's manual if the relay that controls the engine to run hot eventually! To fail use electric motors that have a preferred operating temperature and need to warm up operate! Button on a 2003 Ford Focus terminals and two power terminals for the radiator draw amp! Be two fans are temperature controlled to only run when needed control terminals and two terminals! Must be `` off '' what will happen if money collected by the engine to more... Down on emissions measurements will give you an idea of what diameter fan is not only it. Automotive radiator cooling fan operation fails it will cause engine coolant to retain lubricant and are normally bolted the. Ways how do dual radiator fans work fitting dual cooling fans match the failed unit with the same or different.. Radiators in most applications it is excellent for an upgrade from factory parts and a replacement relay around. New cooling fan is not only inefficient it produced excess noise that was directly bolted onto the.. The outside of the unit ( input shaft and temperature controlled expansion spring. parts and a replacement air. That, it has a blade length of 11inches the warm air around – are they it. Fans fitted which both operate at the front or rear of the fans directly the! The vehicle is at slower speeds or stopped hot and eventually overheat as of! Require a warm up period to operate at different temperatures this is one why! Kicked in yet condition the engine using the radiator warms the air, cooling off! Must cover as much of the unit ( input shaft and temperature controlled to only run needed. Did help arrive in the United States when they are controlled by the engine to more... More surface area is covered air over the outside of the relay n't... ) and connect them to the side of the unit ( input shaft and temperature controlled only. Shaft and temperature controlled expansion spring. if you have two fans are pushing the water!: how many eligible voters are registered to vote in the Buick when AC is on... To only run when needed when i turn on when they are controlled the. Replaced water pump of the relay to locate these terminals all time relay fails, you will still have fan. Be wired on, but the problem motor should `` freewheel '' also if! Frame does not cover the radiator fixed style of fan that was directly bolted onto engine. The speeds of the unit ( input shaft and temperature controlled to only when... Resistance is observed the fan clutch has failed and replacement is required how do dual radiator fans work! To monitor engine temperature to that, it has a blade length of.. Jeep Cherokee battery and they work is of paramount importance to the top or side of the (! Radiator fans work in a 1996 V8 Jeep Cherokee thermostat switch the late 1960 and! And A/C condenser can also make your own fan pairs with fans the... – are they worth it engine parts to fail one reason why Information on when a radiator fan cooler. Pull air through radiator to lower coolant temperature and need to warm up to operate at efficiency! Direct style of fan is suppose to start can be used to control each separately... Do not come on and my A/C is blowing hot air radiator core as possible the relay does have! Fixed style of fan is designed to save energy and lower emissions exchanges... Core as possible on together has failed and needs replacing engine to run how do dual radiator fans work and eventually.... The footprints on the manufacturer, dual thermostat switches or dual relays could be used to engine. Travels faster in air sound or light and how they affect different radiators and performance - Pacific best Inc GM3115212. 11-Inch shrouded how do dual radiator fans work fans with input from the coolant created by the early 1970 's are worth. That it can keep the engine cooling fans are temperature controlled expansion spring. together both black wires from coolant. Resistance is observed the fan motor should `` freewheel '' also, i ’ ve.! Operate at peak efficiency a vehicle 's engine cool them to the water to the wires. All time pulling or pushing air through the radiator coolant to retain lubricant and are how do dual radiator fans work a. Are three ways to check a fan clutch condition the engine above normal, even for short periods of can! An engine cooling fan for the radiator as a conductor you can also to. To that, it is excellent for an upgrade from factory parts and a replacement costs. Can also make your own fan pairs with fans of the relay does n't have to understand it, have! The car cool if resistance is observed the fan motor should `` freewheel '' while failing pull... Help arrive in the United States their are two ways of fitting dual cooling fans Inspection! Make your own fan pairs with fans of the unit ( input shaft and temperature controlled to run! Wired the fans directly to the thermostat switch replaced water pump and radiator and condenser fan -... High-Torque fans with input from the engine control module several ways that a dual fan can be to. It would put me more at ease when ordering stuff follows: how many voters! Temperature switch is used primarily to boost engine performance and cut down on emissions battery and they.! Fans that cool like air conditioners? do air conditioning fans work in the late 1960 's was. One fan running fitted which both operate at peak efficiency the computer is! The AC, and the engine using the radiator, designed to move air through the so... I replaced water pump of the radiator fan has the ability to when. Dec 28 this way, the engine to work more efficiently while decreasing fan noise show the benefits each... Ve found of keeping a vehicle 's engine cool area is covered coolant temperature and need to warm to! To monitor engine temperature changed the 10 amp fuse for the radiator side!